| 摘要 |
<p>PURPOSE: To change and exchange a key transmitting ternary digital electronic signals to an electronic device, to integrate these signals and driving an operation member of access, when they are matched in comparison with set combination as a lock has an encoding circuit of the ternary digital electronic signal. CONSTITUTION: A lock 10 has a slot 12 devised to insert a key 1 into it and a case 11 furnished with an inner passage 13. Magnetic sensors 14 of the same row and the same number of a row and the number of cutouts 5, which the key 1 has to use with this lock, are arranged on each side of the inner passage 13 in the same geometric arrangement. The sensor 14 transmits a signal, this signal is analog-to-digital converted in a device 15 and is encoded in a ternary digital electronic signal by a device 16. This code is transmitted wired or wirelessly, detected by an electronic device 17, decoded by a device 18 and compared with combination previously set on a ternary microswitch 19. Consequently, when they match, a relay 20 is started, and a member for operating door, access, alarm, etc., which are related to it is driven.</p> |
